Mixer



FIG. 1 is a top perspective view of a mixer, showing my new design the broken lines indicating two beaters are shown for illustrative purposes only;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a top perspective view thereof. 

The ornamental design for a mixer, as shown and described. 